| Autor: |
Rekstin, A. F., Galerkin, Y. B. |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 2019, Vol. 2141 Issue 1, p030052-1-030052-9, 9p |
| Abstrakt: |
The Universal modeling method, developed at the St. Petersburg Polytechnic University and successfully used in design practice, operates by gas-dynamic design parameters: the flow rate coefficient, the loading factor and compressibility criteria. The main design constraint for the impeller is the hub ratio. The previously used algorithm for the initial design of impellers is based on the limited design experience and design experiments. In some cases, a significant correction of the dimensions and shape of the impeller is required at the next stage of design. To approximate the initial design to the final design the authors performed the optimal design of 124 radial and axial-radial impellers with flow rate coefficients of 0.015 to 0.15, loading factors of 0.40 to 0.70, hub ratios of 0.25 to 0.40. Geometric parameters are approximated by algebraic formulae and supplemented with recommendations to apply classic formulae of impeller inlet dimensions, which together form the proposed method of the initial design. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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